508 Union St
Portsmouth, NH 03801
5 bd 4 ba 2,760 sqft Built 1901 Lot 5,663 sqft single_family
No recorded sales
Location
Timeline: Sale, Listing & Tax History
Recorded events
No recorded events
No sale or listing events are on file for this property.
Tax assessment history
| Year | Building | Land | Total assessed | Tax paid |
|---|---|---|---|---|
| 2025 | $670,800 | $610,800 | $1,281,600 | $14,751 |
| 2023 | $343,600 | $363,600 | $707,200 | $11,407 |
| 2022 | $382,300 | $363,600 | $745,900 | $11,338 |
| 2021 | $382,300 | $363,600 | $745,900 | $11,211 |
| 2020 | $382,300 | $363,600 | $745,900 | $10,965 |
| 2019 | $382,300 | $363,600 | $745,900 | $11,084 |
| 2018 | $341,100 | $330,500 | $671,600 | $10,638 |
| 2017 | $341,100 | $330,500 | $671,600 | $10,329 |
| 2016 | $302,900 | $256,400 | $559,300 | $9,530 |
| 2015 | $302,900 | $256,400 | $559,300 | $9,391 |
| 2014 | $277,100 | $222,800 | $499,900 | $9,048 |
| 2011 | $272,900 | $222,800 | $495,700 | $8,595 |
| 2007 | $293,400 | $164,000 | $457,400 | $7,474 |
Property facts
Year built
1901
Property type
single_family
Stories
3
Beds
5
Baths
4
Living area
2,760 sqft
Lot size
5,663 sqft
ZIP code
03801
City
Portsmouth
Street
Union St
Coordinates
43.06670, -70.76278
Comparable properties nearby
Frequently asked questions
When did 508 Union St last sell?
No public-record sale is on file for 508 Union St.
What is the current tax assessment for 508 Union St?
The most recent total assessment for 508 Union St (year 2025) is $1,281,600 with $14,751 in property tax.
When was 508 Union St built?
508 Union St was built in 1901.
How does 508 Union St compare to others on Union St?
We track 8 other properties on Union St. Browse the list under "Other properties on Union St" to compare beds, baths, and sale history.
What are the property facts for 508 Union St?
508 Union St is a 5 bed, 4 bath, 2,760 sqft, 5,663 sqft lot single_family.
Is 508 Union St a flip candidate?
No — 508 Union St does not appear in our flips dataset.
Is 508 Union St a tax-appeal candidate?
No — 508 Union St is not currently flagged as a tax-appeal candidate.
Forecast for this area
ZIP-area linear projection — not a per-property automated valuationQuarterly trend
+0.5%
Implied 1-yr
+2.1%
2026 Q3
$1.3M
2026 Q4
$1.31M
ZIP 03801 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Union St